Grater or shredder



July 26, 1949. w. F. MURRAY GRATER on SHREDDER Filed Ded. 15, 1947 -2 Shets-S heet 1 Fig. I.

William F. Murray IN V EN TOR.

July 26, 1949; w, F, MURRAY GRATER 0R SHREDDER 2 Sheets-Sheet 2 Filed Dec. 15, 1947 Fig.9.

III

Fig. 6-

Wi/liam F Murray INVENTOR.

Patented July 26;, 1949 GRATER R SHREDDER William F. Murray, Washington, D. Application December 15, 1947, Serial No. 791,855

2 Claims.

This invention relates to apparatus which may be used for the purpose of grating or shredding.

The primary object of the invention is to facilitate the grating of foodstuffs, such as chocolate, nuts or the like preparatory to using the grated substance as a coating for candy or the like.

The above and other objects may be attained by employing this invention which embodies among its features a hollow cylindrical casing having an open end, a drive shaft extending axially through the opposite end of the casing and terminating within the casing adjacent its open end, an abrading wheel detachably mounted on the shaft adjacent the open end of the casing, a cover detachably secured to the casing for closing the open end thereof and said cover having a feed opening which is axially offset relative to the drive shaft.

Other features include a feed tube carried by the cover, aligning axially with the feed open-' ing in the cover, the bottom walls of the feed opening and of the feed tube lying in the same horizontal plane which lies substantially tangent to the bottom of the drive shaft, peripherally spaced spring arms carried by the cover and extending longitudinally over the outside of the casing, hooks at the ends of the spring arms adapted to engage the end of the casing remote from the open end thereof for holding the cover in end closing position on the casing, a hopper opening into the feed tube, a false bottom detachably fitted in the feed tube and projecting into the casing to prevent material being grated from falling into the space between the grating wheel and the cover and a guide plate removably entered into the hopper and engaging the false bottom to direct the material to be grated toward the grating wheel.

In the drawings,

Figure 1 is a top plan View of a grater or shredder, embodying the features of this invention.

Figure 2 is a side view of the apparatus illustrated in Figure 1, certain portions thereof being shown in section more clearly to illustrate certain details of construction.

v Figure 3 is a front end view of the device illustrated in Figures 1 and 2.

Figure 4 is a perspective view of the cover plate.

Figure 5 is a fragmentary longitudinal sectional view through the feed tube and a portion of the cover plate.

' Figure 6 isa face view of an abrading wheel such as is employed for the purpose of grating bar material, such as chocolate or the like.

Figure '7 is an enlarged sectional view through the grating wheel illustrated in Figure 6.

Figure 8 is a fragmentary enlarged sectional view through a portion of the grating wheel.

Figure 9 is a view similar to Figure 5, illustrating the false bottom and the guide plate in place in the feed tube.

Figure 10 is a horizontal sectional view taken substantially along the line I 0l'0 of Figure 9,

Figure 11 is a face View of an abrading wheel such as is used for grating chunk material, such as nuts or the like.

Referring to the drawings in detail, a base H) is supported in spaced-relation to a table, counter or the like on suitable legs l2, and formed intermediate the ends of the table is an elongated slot or discharge opening [4 which extends transversely, and through which the grated material is discharged into a suitable receptacle R. Suitable guide strips IB are attached in spaced parallel relation to the underside of the base It! and serve to locate the receptacle R, in proper position beneath the discharge opening Id previously referred to. Extending vertically from the upper side of the base ID to one side of the discharge opening M are spaced parallel pedestals I8 carrying at their upper ends journal bearings 20 in which a drive shaft 22 is mounted to rotate about a horizontal axis which lies parallel to the base Hi. Secured as by a set-screw 24 to the shaft adjacent the end remote from the opening M is the hub 26 of a drive pulley 28 which may be equipped with a handle 30 by means of which the pulley and shaft may be rotated. As illustrated, the hub 26- engages the outer face of the journal bearing 20 furthest removed from the slot M in the base Ill. and secured to the shaft against the inner face of said journal bearing is a stop collar 32 which cooperates with the hub 26 in holding the shaft against endwise movement. The end of the shaft'22 remote from the drive pulley it is externally screw-threaded as at 34 for cooperation with'a clamp nut 36 the purpose of which will be more fully hereinafter explained. g

Fixed to the shaft 22 adjacent the threaded end 34 in the stop collar 38 which is adapted to cooperate with the clamp nut- 36in holding an abrad ing wheel in proper position on the shaft.

For grating chocolate orsimilar solids, an abrading 'whe'el such as that designated generally 40 (Figure 6) is employed. This wheel comprises a hub portion from which radiate spokes 44 supporting at their outer'ends a rim 45. At-

tached to the rim 46 by screws 48 is an abrading plate 50 which is provided with a spiral row of cutting teeth 52 which are inclined relative to the plate and adapted to direct the grated mate- '4 false bottom 90 comprises a rectangular plate 92 having formed along one end edge a plurality of spaced notches 94 which as illustrated in Figure 10, are arranged to align with the annular rows rial through holes 54 which extend through the s of teeth 88 so that the portions of the edge of the plate. When grating solid material such as chocolate or the like, the spiral formation of the teeth assures the cutting of the entire surface of the block of chocolate or the like which is presented to the wheel.

Fixedl ofthe' base L is a substantially cylindrical casing designated generally 56 which comprises an end wall 58 of substantially circular formation having an axial openinglfifl therein which aligns with the axes of the bearings 25. Formed peripherally of the endplate fitiisan annular flange 62 which as illustratediinlFigure 2, encircles the abrading wheel and opens downwardly in line with the opening M in thebaselil in order that the grated substance will be directed tohsaidgopsn n b8, is a1 cofirndesigpai e generally 64 comprising and offset axially aft 2 is a rectangular i fi wwh sh lies in s alto the bottom of h isl t i a etigo rn, i. e, a direction :i h s tsheh e t b is shis lie 1h lan s withshe a tlt wil l thusbe seen that ial .spehas chocolate or I he ieedtube i5 and is .7 P t. Qhihe t h n Whee l ashe -as e is s e the fiil lihqsl iih he iii .l.. es ;h?d fi'l t Arie 1 mi1 shs s sqzh will is wt hs the ing 5t andlopening. gi irrto:the Ifceptacle R. In les e th t-she .ri shhs eh i s for srehhs diyided subs n uch as nut -meats, the top wal l ohthatr b 1 6 s prgyided neartheend-which tense 12 .1 "ohenmszhhwit a fe d op n n 118- h sh sur epesedzb qan. standin hopper 3}), the wall of high-gamete ;from the cover 6&- s P fi IQG fi fi e a thest h s t h m f l hs eihshs essi ih elnz-ssqe t lerate htmestshn h like, lemhl h .sss s whee :t s sest dasenerany 8.4 which k t e whee s!! zisnr yi ed w ait hub, spok and a rim, but in place of the plate 50,,th'e wheel B4i sseith hsgh sthehubrsnake an r m he hls s ate her a nh s 'row .n c t n e t -B ses. ssa oshe he e sh of the h@525l sss sus rhiesei beg- FQffiHWQIfiiBsJhe nus-meats r the like N 5-1 w yfi a aib i stat :thsnss I r id a ieg ses al 9 w i h as l h id fi isfi sd h h t e fees ss es ehth heh e i ls ee Th plate 92 between the teeth will engage the plate 86 of the wheel 84 and prevent chunks of the nuts being grated from falling downwardly between the cover plate 64 and the wheel 84. The end of the plates-92 remotegfrom the end having the notches '94--therein is bent back upon itself as at 96 to form a spring tongue which engages (the folded over end portion 98 of the feed tube 7.6 in order to form a clip by which the false bottom 98 is retained in place. A guide plate I06 is introduced into the hopper 86 to bear against the aILSZ and iorms a substantial continuation thereof so that nuts N deposited in the hopper Will bexdirected toward the abrading wheel 84 as suggested in Figure 9.

i 1 when ha g -@5 41 .s tffti :bh fm rihlesheh e sl t e the HKQ/zflfllq :3 i l ene l m h shei ehke t tth iah h e wheel t} is edgin osition onthe shailt, 1 and is .7 l e hhe iss i thseh th ha .5 an z-ih le Th esere 'l-hl i wki heapleeedin t n w ah rser .s asm emerlvinathefi e 62 of thepasing {5S and k he jingegs v1.2 engagms t Wel ie -s sal l a v i C n???3 d'Zh Ql h:Ph i:f. l 5151:131 su e ed n ii l fiuifi Ilfifi etetie n th drive Whe fie fi wil h r d h itha ath teeth 5 will r -awa thetendip th hen-materiel Whe li -i Q?Q s9 grat eih h eet h :th

s hh e ewsd. l, that t rasive-Whee s esam stemm d, an the abrading whee su-hstitg ted th egef er. The fs ihs-w ee 1 5 .l lamssr i-henlae s me shslv desc bed 't fizifilfi fhiiii fifl Wi -sl p ed o p a e ain h t m 52 :th :fi g time 6 s v h i he-lhetshehzshd there rea ses -th ee of e swim-"lies wh els. fllhe suisiep lat We is he dres ed iihfish ii onthro gh th upp o enzshdh 'wih fish e 8311; est a ains h w l ehhs ma h -11 er-s stihsiqhrth fslss b t m 1 9mm h ire s sha 1 1 lsls elnrexv t he th issdeseaiss-Jh e-nsi-wvh hhatms t t l l s hts QLiQeMnt thellhgr s Thi t y w l h i d lav ih iaehhsQzehi l en st nt qhia wi ihi 'kl hh as ihs '1 s an u n .r t tiqh Q t ses tir wwh r25 ethe h t w l h smi ed e s et deiht smal particlesisihsrt th i e -sha hhe ssis i-hs hens s hfi'i il flb 1 93 1 h tweeh heihetehe 9e lie e ssihe s 9 9. t th h ths ee s the pl 6 i g l -h eviden tha shhhls :s nutmeats will be prevented flQQ1-,- f; 8 l1i}lgfili1li0llgh the device before having been grqund to the desired size. While h 1 Q $LQ Q :-1 I; :hs B$ ZhQW and described the preferred embodiment of ,this invention it is :to be wunderstood ;that minor ee e in the detai s 19i :esihst iwt qn new h hs e as a szhsa f pa tsm 'he resorted to without departing; tl1 e sphgitangl SCOPE of t .i l ih fi pll fl ii him ii- Having described the inventipn what iaclain egl as new is:

er rate ase shhsads lsem is ns ea i a n h lm 'fl flmh s r-e e strait: axial isposed through the opposite endgi the qa sing, e hesihe w ee ge iwls m implin fid t ir-t s t en liqtetsls x di heses ewithihthee siha seid Whee :he e enit she adherent the open end with radially disposed rows of teeth, a cover detachably secured to the open end of the casing, said cover being formed with a feed opening, a feed tube secured in alignment with said opening, and a plate slidably disposed on the bottom of the feed tube for longitudinal adjustment therein relative to the abrading wheel, said plate being formed at its inner end with spaced notches, whereby the notches will receive the teeth of the wheel as the wheel rotates and cause all of the material to be grated.

2. A grater and shredder comprising a casing having an open end, an abrading wheel rotatably disposed within the casing and having a series of radial rows of teeth formed on its front face adjacent the open end, a cover detachably secured to the open end of the casing and formed with an opening, a tube secured at one end to the casing in alignment with the opening, a hopper formed on the top of the tube and cornxnunicated therewith, a plate slidably disposed in the bottom of the tube for longitudinal adjustment therein relative to the front face of the abrading wheel, said plate being formed at its inner end with spaced projecting teeth adapted to engage against the front face of the abrading wheel with the teeth on the front face of the abrading wheel moving between the teeth on the plate, and a baffle member diagonally disposed in a substantial vertical plane in the hopper and having its lower edge disposed adjacent the inner toothed edge of the plate whereby material placed in the hopper is directed onto the inner edge of the plate.

WILLIAM F. MURRAY.

REFERENCES CITED The following referenlces are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 188,059 Kelly Mar. 6, 1877 666,211 Shortt Jan. 15, 1901 677,473 Royal July 2, 1,423,960 Mohnacs July 25, 1922 1,866,630 Donahoo July 12, 1932 2,411,333 Orland Nov. 19, 1946 2,417,564 Newman Mar. 18, 1947 

